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BEGIN:VEVENT
DTSTAMP:20210916T132452Z
LOCATION:Lise Girardin
DTSTART;TZID=Europe/Stockholm:20210708T110000
DTEND;TZID=Europe/Stockholm:20210708T113000
UID:submissions.pasc-conference.org_PASC21_sess158_msa236@linklings.com
SUMMARY:Incorporating General Relativity and Radiation into N-Body Simulat
 ions
DESCRIPTION:Minisymposium\n\nIncorporating General Relativity and Radiatio
 n into N-Body Simulations\n\nHannestad\n\nBy far the majority of all cosmo
 logical N-body simulations are Newtonian in nature. However, it is possibl
 e to make such simulations consistent with general relativity by adding a 
 few ingredients: The equation of motion of particles must receive relativi
 stic corrections, and any relativistic energy density and pressure present
  much be added at both the background and perturbation levels. Both effect
 s play an important role only on very large scales which are well describe
 d by linear perturbation theory and therefore it is possible to incorporat
 e then in the actual simulation by realising them on a grid using a linear
  theory calculations with codes such as CLASS or CAMB. In the talk I will 
 describe the numerical setup of such simulations performed with the CONCEP
 T and PKDGRAV3 codes, as well as numerical results, limitations of the met
 hod and possible future lines of investigation.\n\nDomain: Physics
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